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This probabilistic forecast is issued by the North Central River Forecast Center.
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About this graph
Forecasts for the Upper Iowa River at Decorah are issued as needed during times of high water, but are not routinely available.
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Downstream Gauge Downstream Gauge - at Dorchester
Zoom Level:15
Flood Categories (in feet)
Major Flood Stage: 14
Moderate Flood Stage: 13
Flood Stage: 12
Action Stage: 9
Low Stage (in feet): -9999

Historic Crests
(1) 17.90 ft on 06/09/2008
(2) 15.20 ft on 05/29/1941
(3) 14.35 ft on 08/17/1993
(4) 13.68 ft on 08/24/2016
(5) 13.08 ft on 03/27/1961
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 13.68 ft on 08/24/2016
(2) 11.67 ft on 06/23/2013
(3) 17.90 ft on 06/09/2008
(4) 12.31 ft on 06/01/2000
(5) 14.35 ft on 08/17/1993
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 1.30 ft on 02/02/1959
(2) 2.40 ft on 09/01/1989
(3) 2.51 ft on 12/27/2003
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Gauge LocationGauge Map Marker
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
19.5 Water may begin to overtop the protective levee.
14 Major flooding may occur outside the areas protected by the levee.
13 Residential flooding on the west side of town is possible. Street and storm sewer flooding on the east side of town south of the levee can cause basement flooding if flood stage is exceeded for an extended period of time.
12 Residential areas are threatened on the west edge of Decorah just before the levee protecting the town begins. Some agricultural flooding may also occur.
(1) Upstream view at Decorah, October 18th, 2010
(2) Downstream view at Decorah, October 18th, 2010

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
  • How low could the river get?
  • Link to text page with Hourly River Stage Level and Water Temperatures
  • Collaborative Agencies Collapse
    The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
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    Page last modified: 2-Nov-2020 7:29 PM
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